John R Mullaney
John Mullaney is a Scientist Emeritus with the New England Water Science Center.
John R. Mullaney, a USGS emeritus scientist, has studied groundwater and water quality in Connecticut and New England for four decades. His work includes regional and national studies on nutrient loading to estuaries, groundwater quality, groundwater–surface water interactions, and groundwater recharge and storage.
His current interest is to improve the understanding of drought in New England through analysis of groundwater levels, recharge patterns, and base flows. A secondary interest is improving public access to water-resources information through statistical analysis and visualization.
Professional Experience
Scientist Emeritus, U.S. Geological Survey, New England Water Science Center, 2026 to Present
Hydrologist, Groundwater Specialist, U.S. Geological Survey, New England Water Science Center, 2017 to 2025
Acting Groundwater Specialist, California Water Science Center, 2020 to 2021
Hydrologist, Lead Scientist, Groundwater Specialist, U.S. Geological Survey, Connecticut Office, 2014 to 2017
Supervisory Hydrologist, Chief of the Hydrologic Studies Section, U.S. Geological Survey, Connecticut Water Science Center, 2007 to 2013
Hydrologist, U.S. Geological Survey, Connecticut Water Science Center, 1992 to 2007
Hydrologist, U.S. Geological Survey, New Hampshire-Vermont Office, 1991
Hydrologist, U.S. Geological Survey, Connecticut Office, New England District, 1989 to 1991
Hydrologic Technician, U.S. Geological Survey, Connecticut Office, New England District, 1986 to 1989
Education and Certifications
B.S. Geology, University of Connecticut, 1986
Professional Hydrologist (Groundwater), American Institute of Hydrology, Credential ID 25-HGW-05017
Science and Products
Filter Total Items: 35
Summary of water quality trends in the Connecticut River, 1968-1998 Summary of water quality trends in the Connecticut River, 1968-1998
The Connecticut River has a long history of water quality impairment. From the 1800s to the late 1960s, untreated or minimally treated waste discharges from population centers and industries have caused serious water quality problems. Trend analysis of selected water quality data in Connecticut from 1968 to 1998, collected by the U.S. Geological Survey in cooperation with the Connecticut
Authors
John R. Mullaney
Water use, ground-water recharge and availability, and quality of water in the Greenwich area, Fairfield County, Connecticut and Westchester County, New York, 2000-2002 Water use, ground-water recharge and availability, and quality of water in the Greenwich area, Fairfield County, Connecticut and Westchester County, New York, 2000-2002
Ground-water budgets were developed for 32 small basin-based zones in the Greenwich area of southwestern Connecticut, where crystalline-bedrock aquifers supply private wells, to determine the status of residential ground-water consumption relative to rates of ground-water recharge and discharge. Estimated residential ground-water withdrawals for small basins (averaging 1.7 square miles...
Authors
John R. Mullaney
Estimation of nitrogen yields and loads from basins draining to Long Island Sound, 1988–98 Estimation of nitrogen yields and loads from basins draining to Long Island Sound, 1988–98
Monitoring data on total nitrogen concentrations and streamflow were used to estimate annual nonpoint nitrogen loads for 1988?98 at 28 monitoring sites and 26 unmonitored basins that drain to Long Island Sound. The estimated total nitrogen yields at monitoring sites were used with basin characteristics and ancillary data to develop a multiple-linear regression equation to estimate...
Authors
John R. Mullaney, Gregory E. Schwarz, Elaine C. Todd Trench
Delineation and Analysis of Uncertainty of Contributing Areas to Wells at the Southbury Training School, Southbury, Connecticut Delineation and Analysis of Uncertainty of Contributing Areas to Wells at the Southbury Training School, Southbury, Connecticut
Contributing areas to public-supply wells at the Southbury Training School in Southbury, Connecticut, were mapped by simulating ground-water flow in stratified glacial deposits in the lower Transylvania Brook watershed. The simulation used nonlinear regression methods and informational statistics to estimate parameters of a ground-water flow model using drawdown data from an aquifer test...
Authors
J. Jeffrey Starn, Janet Radway Stone, John R. Mullaney
Hydrogeology and water quality of the Nutmeg Valley area, Wolcott and Waterbury, Connecticut Hydrogeology and water quality of the Nutmeg Valley area, Wolcott and Waterbury, Connecticut
Hydrogeologic investigations in an industrial area in Wolcott and Waterbury, Connecticut, have provided information on the geology, ground-water flow, and water quality of the area. Ground-water contamination by volatile organic compounds was discovered in the 1980?s in the Nutmeg Valley area, where approximately 43 industries and 25 residences use ground water for industrial and...
Authors
John R. Mullaney, R.A. Mondazzi, J. R. Stone
Natural and human factors affecting shallow water quality in surficial aquifers in the Connecticut, Housatonic, and Thames River basins Natural and human factors affecting shallow water quality in surficial aquifers in the Connecticut, Housatonic, and Thames River basins
No abstract available.
Authors
S. J. Grady, John R. Mullaney
Nitrogen and pesticide concentrations in an agricultural basin in north-central Connecticut Nitrogen and pesticide concentrations in an agricultural basin in north-central Connecticut
No abstract available.
Authors
John R. Mullaney, Marc James Zimmerman
Hydrogeology and water quality of a surficial aquifer underlying an urban area, Manchester, Connecticut Hydrogeology and water quality of a surficial aquifer underlying an urban area, Manchester, Connecticut
The quality of water along flowpaths in a surficial aquifer system in Manchester, Connecticut, was studied during 1993-95 as part of the National Water Quality Assessment program. The flowpath study examined the relations among hydrogeology, land-use patterns, and the presence of contaminants in a surficial aquifer in an urban area, and evaluated ground water as a source of contamination...
Authors
John R. Mullaney, Stephen J. Grady
Geohydrology and water quality of stratified-drift aquifers in the Upper Connecticut and Androscoggin River basins, northern New Hampshire Geohydrology and water quality of stratified-drift aquifers in the Upper Connecticut and Androscoggin River basins, northern New Hampshire
No abstract available.
Authors
J. R. Olimpio, John R. Mullaney
Hydrogeology and ground-water flow at the Muddy Brook riparian zone, north-central Connecticut Hydrogeology and ground-water flow at the Muddy Brook riparian zone, north-central Connecticut
The hydrogeology and ground-water flow of Muddy Brook were investigated as part of a study to determine the effects of restoring agricultural riparian land to forest on water quality. Test-hole drilling, well installation, and slug-test analyses indicate that the part of Muddy Brook studied is underlain by thin stratified-drift deposits. These deposits are mostly less than 10 feet thick...
Authors
John R. Mullaney
Water resources data, Connecticut, water year 1994 Water resources data, Connecticut, water year 1994
Water resources data for the 1994 water year for Connecticut consist of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and water levels of ground-water wells. Specifically, it contains: (1) discharge records for 44 streamflow-gaging stations; (2) stage-only records for 4 tidal-gaging stations; (3) 41 partial-record...
Authors
B.S. Davies, J.R. Bohr, John R. Mullaney, Jonathan Morrison
Science and Products
Filter Total Items: 35
Summary of water quality trends in the Connecticut River, 1968-1998 Summary of water quality trends in the Connecticut River, 1968-1998
The Connecticut River has a long history of water quality impairment. From the 1800s to the late 1960s, untreated or minimally treated waste discharges from population centers and industries have caused serious water quality problems. Trend analysis of selected water quality data in Connecticut from 1968 to 1998, collected by the U.S. Geological Survey in cooperation with the Connecticut
Authors
John R. Mullaney
Water use, ground-water recharge and availability, and quality of water in the Greenwich area, Fairfield County, Connecticut and Westchester County, New York, 2000-2002 Water use, ground-water recharge and availability, and quality of water in the Greenwich area, Fairfield County, Connecticut and Westchester County, New York, 2000-2002
Ground-water budgets were developed for 32 small basin-based zones in the Greenwich area of southwestern Connecticut, where crystalline-bedrock aquifers supply private wells, to determine the status of residential ground-water consumption relative to rates of ground-water recharge and discharge. Estimated residential ground-water withdrawals for small basins (averaging 1.7 square miles...
Authors
John R. Mullaney
Estimation of nitrogen yields and loads from basins draining to Long Island Sound, 1988–98 Estimation of nitrogen yields and loads from basins draining to Long Island Sound, 1988–98
Monitoring data on total nitrogen concentrations and streamflow were used to estimate annual nonpoint nitrogen loads for 1988?98 at 28 monitoring sites and 26 unmonitored basins that drain to Long Island Sound. The estimated total nitrogen yields at monitoring sites were used with basin characteristics and ancillary data to develop a multiple-linear regression equation to estimate...
Authors
John R. Mullaney, Gregory E. Schwarz, Elaine C. Todd Trench
Delineation and Analysis of Uncertainty of Contributing Areas to Wells at the Southbury Training School, Southbury, Connecticut Delineation and Analysis of Uncertainty of Contributing Areas to Wells at the Southbury Training School, Southbury, Connecticut
Contributing areas to public-supply wells at the Southbury Training School in Southbury, Connecticut, were mapped by simulating ground-water flow in stratified glacial deposits in the lower Transylvania Brook watershed. The simulation used nonlinear regression methods and informational statistics to estimate parameters of a ground-water flow model using drawdown data from an aquifer test...
Authors
J. Jeffrey Starn, Janet Radway Stone, John R. Mullaney
Hydrogeology and water quality of the Nutmeg Valley area, Wolcott and Waterbury, Connecticut Hydrogeology and water quality of the Nutmeg Valley area, Wolcott and Waterbury, Connecticut
Hydrogeologic investigations in an industrial area in Wolcott and Waterbury, Connecticut, have provided information on the geology, ground-water flow, and water quality of the area. Ground-water contamination by volatile organic compounds was discovered in the 1980?s in the Nutmeg Valley area, where approximately 43 industries and 25 residences use ground water for industrial and...
Authors
John R. Mullaney, R.A. Mondazzi, J. R. Stone
Natural and human factors affecting shallow water quality in surficial aquifers in the Connecticut, Housatonic, and Thames River basins Natural and human factors affecting shallow water quality in surficial aquifers in the Connecticut, Housatonic, and Thames River basins
No abstract available.
Authors
S. J. Grady, John R. Mullaney
Nitrogen and pesticide concentrations in an agricultural basin in north-central Connecticut Nitrogen and pesticide concentrations in an agricultural basin in north-central Connecticut
No abstract available.
Authors
John R. Mullaney, Marc James Zimmerman
Hydrogeology and water quality of a surficial aquifer underlying an urban area, Manchester, Connecticut Hydrogeology and water quality of a surficial aquifer underlying an urban area, Manchester, Connecticut
The quality of water along flowpaths in a surficial aquifer system in Manchester, Connecticut, was studied during 1993-95 as part of the National Water Quality Assessment program. The flowpath study examined the relations among hydrogeology, land-use patterns, and the presence of contaminants in a surficial aquifer in an urban area, and evaluated ground water as a source of contamination...
Authors
John R. Mullaney, Stephen J. Grady
Geohydrology and water quality of stratified-drift aquifers in the Upper Connecticut and Androscoggin River basins, northern New Hampshire Geohydrology and water quality of stratified-drift aquifers in the Upper Connecticut and Androscoggin River basins, northern New Hampshire
No abstract available.
Authors
J. R. Olimpio, John R. Mullaney
Hydrogeology and ground-water flow at the Muddy Brook riparian zone, north-central Connecticut Hydrogeology and ground-water flow at the Muddy Brook riparian zone, north-central Connecticut
The hydrogeology and ground-water flow of Muddy Brook were investigated as part of a study to determine the effects of restoring agricultural riparian land to forest on water quality. Test-hole drilling, well installation, and slug-test analyses indicate that the part of Muddy Brook studied is underlain by thin stratified-drift deposits. These deposits are mostly less than 10 feet thick...
Authors
John R. Mullaney
Water resources data, Connecticut, water year 1994 Water resources data, Connecticut, water year 1994
Water resources data for the 1994 water year for Connecticut consist of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and water levels of ground-water wells. Specifically, it contains: (1) discharge records for 44 streamflow-gaging stations; (2) stage-only records for 4 tidal-gaging stations; (3) 41 partial-record...
Authors
B.S. Davies, J.R. Bohr, John R. Mullaney, Jonathan Morrison